Portable heart monitor



FIG. 1 illustrates a right side view of the portable heart monitor. Portions of the article shown in broken lines form no part of the claimed design.

FIG. 2 illustrates the rear view of FIG. 1. Portions of the article shown in broken lines form no part of the claimed design.

FIG. 3 illustrates the front view of FIG. 1.

FIG. 4 illustrates the top side view of FIG. 1.

FIG. 5 illustrates the rear perspective view of FIG. 1.

FIG. 6 illustrates the front perspective view of FIG. 1.

FIG. 7 illustrates the left side view of FIG. 1; and,

FIG. 8 illustrates the bottom view of FIG. 1. 

CLAIM The ornamental design for a portable heart monitor, as shown and described. 